https://www.metrotransit.org/northstar-line
The lines that goes between the Mall of America, downtown Minneapolis, and St Paul are light rail, and are faster than what would normally be considered a "tram" or "streetcar".
I mainly mentioned it since the parent comment was about a group of girls getting on the train purely for the experience of being on the train, and my experience seemed pretty similar.
Don't know that it terribly matters one way or the other though I guess.
So there are some tram/streetcar/light rail systems out there (like the one in New Orleans) that consist of individual railway vehicles, and are thus not trains.
Haha when I took Caltrain daily to mountain view this was my nightmare. Bluetooth headphones and a white noise app were a requirement.
Those field trip days, and the rides home on baseball game days... I do not miss that commute.
I grew up in the eastbay, and at least while I was growing up, the bart train was a friendly environment of people interacting with one another. Obviously it came with some not so pleasant things (i.e. homelessness and unwanted touching) but more human none-the-less.
I don't think it would have been many children's first trip either, just a cheap morning's entertainment for the nursery...